For them, he's an unwelcome skunk at G20 garden party proceedings, sidelined for the family photo, standing at its far edge, who'd be willing to stand next to him, exiting the stage without shaking hands or talking with other leaders when taken.

Publicly he stayed largely on the periphery, most leaders likely uncomfortable about being photographed near him, let alone shaking hands and chatting amiably with a universally reviled despot.

Vladimir Putin greeted him warmly, caught on camera smiling with a high-five. Sputnik News said their public exchange "st(ole) the show at the G20…the video of their greeting going viral" online.

RT reported on the unsettling exchange, adding "(a)s the leaders were lining up for a traditional 'family photo', Trump was seen walking towards Putin – but at the last possible moment, the feed was cut to a closer shot of a different group."

"The wide shot was back a few moments later, when Trump was already in his spot further down the line."

In greeting MBS on Friday, Putin opted for diplomatic graciousness instead of going out of his way to avoid him, the right thing to do, a ruthless tyrant, unaccountable for egregious high crimes - ongoing in Yemen, Syria, domestically and elsewhere while G20 leaders schmoozed in Buenos Aires.

France's Macron acted like Putin and Trump, caught on camera chatting amiably with MBS, others likely doing it more discretely.

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Realpolitik took precedence over honor and high-mindedness the way it most always does, disturbing scenes caught on camera indelibly etched in my mind, many others likely viewing them with disdain.

Ordering Jamal Khashoggi's murder was a drop in the ocean compared to MBS' Nuremberg-level crimes in Yemen, Syria, and elsewhere in the region, its support for ISIS and likeminded jihadists, along with notorious domestic human and civil rights abuses - horrific enough to make many world leaders blush.

MBS is the Arab world's most ruthless tyrant, not an issue for Putin, Macron, Trump, and others, greeting him like a close friend, an ordinary guy, far from it.

Other leaders were more circumspect, at least publicly, keeping their distance, cordiality with MBS on camera avoided.

Behind the scenes it's another matter for some, meetings held with the crown prince - unannounced or made known in advance.

He was sidelined at the official family photo, largely ignored when taken, leaving the scene without shaking hands or other exchanges with G20 leaders.

Putin, Macron, Trump, and perhaps several other G20 leaders acted otherwise, caught on camera greeting MBS warmly, a figure to be shunned, rebuked, and held accountable for his high crimes.

"It is essential to complete the investigation as soon as possible. We note that the Saudi authorities are carrying out this investigation and note that they are cooperating with the Turkish authorities. We will wait for the final verdict to be delivered."

Putin earlier said he lacked information about the murder, adding he won't alter bilateral relations with the kingdom over it. Reportedly he met privately with MBS on Saturday.

The kingdom repeatedly lied about Khashoggi's murder before admitting responsibility for what happened.

Claiming MBS had nothing to do with it was and remains a bald-faced lie. Riyadh investigating itself assures whitewash and coverup, convenient patsies to take the fall for his crime.

For Russia, the US, UK, France, and other countries, continuing dirty business as usual with the kingdom overrides all else.

Trump, Putin, and other G20 leaders refused to demand MBS be held accountable for his high crimes - Nuremberg-level ones far worse than Khashoggi's murder.

As the saying goes, when lying with dogs, you get fleas. Treating war criminals like law-abiding figures shares guilt with their high crimes.